PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-12:43:00
G02     203.0          28.7                7.2 +/-    1.29      12.9 +/-    1.29  0.050 / 0.040
G06     160.9          65.9                8.1 +/-    0.84       8.7 +/-    0.84  0.060 / 0.040
G12     305.1          13.1                4.2 +/-    2.91      10.9 +/-    2.91  0.080 / 0.090
G17     30.0           53.7                5.6 +/-    1.04       6.8 +/-    1.04  0.080 / 0.090
G19     357.8          66.6                4.9 +/-    0.58       5.2 +/-    0.58  0.040 / 0.030
G24     302.1          35.2                5.6 +/-    2.21       8.9 +/-    2.21  0.040 / 0.030
G28     94.8           39.5                6.1 +/-    1.31       8.9 +/-    1.31  0.030 / 0.030